49 
TROPIDONOTUS LEBERIS.—Linneus. 
Plate XIII. 
Cuaracters. Head moderate, elongated, sub-oval; neck contracted; body 
above dusky olive-brown, with three black lines; abdomen pale yellow, with four 
dusky lines; scales strongly carinated. Pl. 143. Se. 70. 
Synonymes. Coluber leberis, Linnzus, Syst. Nat., tom. i. p. 216, ed. x. 
Coluber leberis, Gmelin, Syst. Nat. Lin., tom. i. pars iil. p. 1086. 
Vipera leberis, Latreille, Hist. Nat. Rept., tom. iv. p. 8. 
Vipera leberis, Dawdin, Hist. Nat. des Rept., tom. vi. p. 218. 
Coluber leberis, Shaw, Gen. Zool., vol. iii. part i. p. 433. 
Coluber septemyittatus, Say, Journ. Acad. Nat. Scien. Philad., vol. iv. p. 420. 
Coluber septemvittatus, Harlan, Med. and Phys. Res., p. 118. 
Description. The head is rather small, elongated, sub-oval and with the snout 
rounded at the tip. The vertical plate is regularly pentagonal, and broadest 
before; the superior orbital are of the same length as the vertical, but very 
narrow, elongated, and quadrilateral. The frontal plates are irregularly hexa- 
gonal, broadest transversely, descending far on the side of the head to join the 
loral; the anterior frontal are quadrilateral, but irregularly so, broader behind and 
narrower before. The rostral plate is heptagonal, short, and rounded in front as 
well as above, and concave below; the occipital are pentagonal, smaller, and 
notched behind. The nasal plates are two in number, quadrilateral, and nearly 
of the same size; the anterior lunated behind and the posterior crescentic in front, 
to accommodate the nostril. There are two small, elongated, quadrilateral 
anterior orbital; and in front of them is a large pentagonal, loral plate; there are 
Vor. IV.—7 
